I don't think it's to do with hype for Move and Kinect. There's a guy in the local Game store trying to push pre-orders of Kinect which suggests to me it must not be doing so well before its even released if he's having to peddle pre-orders to someone who just wanted a cheap used £5 game.
I think it's because the wii has been on sale for a long time now and many households already have one. This is also the reason why the Kinect and Move will be a commercial failure. No-one will want a Wii +1 because they've already got a Wii. Shiny HD graphics aren't going to make grandma pick the thing up. Another thing to bear in mind is that unlike the 360 (and arguably, PS3) the Wii is built to last. It's not often one goes wrong so there is little need to replace them. The planned obsolescence of the 360 (i'm looking at you RROD) is one of the reasons sales stay moderately high. Hell, i'm on about my fourth god damn unit already.
I think it's because the wii has been on sale for a long time now and many households already have one. This is also the reason why the Kinect and Move will be a commercial failure. No-one will want a Wii +1 because they've already got a Wii. Shiny HD graphics aren't going to make grandma pick the thing up. Another thing to bear in mind is that unlike the 360 (and arguably, PS3) the Wii is built to last. It's not often one goes wrong so there is little need to replace them. The planned obsolescence of the 360 (i'm looking at you RROD) is one of the reasons sales stay moderately high. Hell, i'm on about my fourth god damn unit already.